When I was invited to have dinner by the GF parents, they also offered me to stay in my GF room that night (was also the 1st night I stayed at their small and crowded house). All of us had been drinking that night and wasn't a good idea to drive anyway so I accepted the offer. Obviously, me and my GF stayed up quite late until we think everyone is asleep, then I get in to her bed and got busy. Next morning while having breakfast with her family, her dad asked if I rested well as I looked tired. Half awake and without thinking, I replied "Yeah I didn't get much sleep last nite". At that instant then I realised my mistake, my GF and her dad was staring at me while her mum and siblings went into silent. I looked down and continued eating, trying to pretend I was innocent as I don't know what else to react.
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